There are many reasons for weak ejaculation and low semen, such as frequent masturbation, excessive sexual life, prostatitis, seminal vesiculitis and other diseases. 1. Frequent masturbation, excessive sexual life: frequent masturbation, excessive sexual life and other behaviors, easy to cause physical fatigue, will cause weak ejaculation semen phenomenon. 2. prostatitis, seminal vesiculitis: prostatitis, seminal vesiculitis and other urinary tract infections, may cause the seminal vesiculitis contraction weakness, prostate fluid secretion abnormality, which leads to ejaculation weakness, the phenomenon of the semen is particularly low. The fact is, there may be other reasons why you need to go to the hospital in time and follow the doctor’s instructions.